S355JR structural steel is a widely used non-alloy structural steel grade specified under EN 10025-2. As a trusted steel manufacturer and global supplier, GNEE produces and supplies S355JR steel in hot-rolled flat and long products for load-bearing and welded structures.
Within the first stages of steel structure fabrication, S355JR steel is often selected due to its reliable mechanical strength, stable chemical composition, and excellent weldability.
S355JR structural steel
At GNEE, we maintain strict quality control from ladle analysis to finished products, ensuring every batch of S355JR steel meets international project requirements.
As a factory-direct supplier, we support bulk orders, customized dimensions, and third-party inspections to help contractors reduce procurement risk and project timelines.
S355JR Steel Grade Classification and Product Forms
S355JR belongs to non-alloy structural steel, designed primarily for structural components subjected to static and dynamic loads.
Main product forms supplied by GNEE:
- Hot-rolled steel plates
- Structural steel beams and profiles
- Flat and long products
- Semi-finished steel products
These products are commonly used in welded and bolted assemblies for infrastructure and industrial facilities.
Chemical Composition of S355JR Steel (EN 10025-2)
The controlled chemical composition ensures good strength, toughness, and weldability.
| Element | C | Si | Mn | P | S | N | Cu |
|---|---|---|---|---|---|---|---|
| Max % | ≤0.24 | ≤0.55 | ≤1.60 | ≤0.035 | ≤0.035 | ≤0.012 | ≤0.55 |
Mechanical Properties of S355JR Structural Steel
The mechanical performance of S355JR structural steel varies with nominal thickness.
| Thickness (mm) | Yield Strength (MPa) | Tensile Strength (MPa) |
|---|---|---|
| < 3 | 355 | 510–680 |
| ≥ 3 ≤ 16 | 355 | 470–630 |
| >16 ≤ 40 | 345 | 470–630 |
| >40 ≤ 63 | 335 | 470–630 |
| >63 ≤ 80 | 325 | 470–630 |
| >80 ≤ 100 | 315 | 470–630 |
| >100 ≤ 150 | 295 | 450–600 |
| >150 ≤ 200 | 285 | 450–600 |
| >200 ≤ 250 | 275 | 450–600 |
| >250 ≤ 400 | 265 | 450–600 |
These values make S355JR ideal for medium to heavy structural loads.
Standard Dimensions and Thickness Range of S355JR Steel
GNEE supplies S355JR steel in a wide range of dimensions to meet engineering needs.
Typical supply range:
Plate thickness: 3 mm – 400 mm
Width: up to 3000 mm
Length: up to 12000 mm
Profiles and beams: customized upon request
S355JR Steel Equivalent Grades and Analogues
S355JR has several international equivalents used in different regions:
| Country / Region | Equivalent Grade |
|---|---|
| France | E36-2 |
| UK | 50B |
| Europe (old) | Fe510-B |
| Belgium | AE355-B |
| Sweden | 1412-00 |
This makes S355JR suitable for multinational projects requiring grade substitution.
Applications of S355JR Structural Steel in Engineering Projects
Thanks to its balanced strength and weldability, S355JR structural steel is widely applied in:
- Building and steel frame structures
- Bridges and infrastructure projects
- Heavy machinery and equipment
- Power plants and industrial facilities
- Ground and underground engineering components
Its versatility reduces material switching costs across project stages.
Weldability and Fabrication Performance of S355JR Steel
S355JR steel offers excellent weldability using common welding methods:
- MIG / MAG welding
- Arc welding
- Submerged arc welding
Welding can be performed with or without preheating, depending on thickness and ambient conditions. Post-weld heat treatment may be applied for stress relief in heavy sections.
As a proven S355JR structural steel manufacturer and exporter, GNEE delivers stable quality, competitive pricing, and fast global shipping. With strict EN 10025-2 compliance and full inspection support, our S355JR structural steel helps ensure safety, durability, and cost control in construction and engineering projects.
Contact us for the latest S355JR structural steel price list and technical support
What is S275J0 material equivalent to?
S275J0 steel plate/sheet is in EN 10025 standard, the material number is 1.0143. The equivalent grades of S275J0 steel are DIN 17100 St 44-3 U, NFA 35-501 E 28-3, UNI 7070 Fe 430 C, BS 4360 43 C, UNE 36.080 AE 275 C, ASTM A 578 Gr. 70.
What is the difference between S275 JR and J0?
S275 J0 steel has a guarantee of resilience at 0°C> 27J, while s275JR steel has, when required, a guarantee of resilience at a temperature greater than 20°C> 27J.
What is the difference between A36 and S275J0?
ASTM A36 has moderate corrosion resistance due to its low carbon content. However, it is not recommended for use in marine environments, as it may need to be corrected quickly. S275JR, on the other hand, has better corrosion resistance due to its higher manganese content.
What material is S275 j0?
S275JO is a readily weldable low carbon manganese steel with good impact resistance. This material is commonly supplied in the untreated or normalized condition. Machinability of this material is similar to that of mild steel.